Which of the following equations have no solutions? Choose all answers that apply:
Choose all answers that apply:

(Choice A)
A
20x+40=40x+2020x+40=40x+2020, x, plus, 40, equals, 40, x, plus, 20

(Choice B)
B
-40x+40=20x+20−40x+40=20x+20minus, 40, x, plus, 40, equals, 20, x, plus, 20

(Choice C)
C
-20x+40=-20x+20−20x+40=−20x+20minus , 20, x, plus, 40, equals, minus, 20, x, plus, 20

(Choice D)
D
40x+40=40x+2040x+40=40x+20

0.84 dang lotta people are looking for this lol or if you round up its 1 but the overall answer to that is 0.84

step-by-step explanation:

college

step-by-step explanation:

irst, find the z score of a score of 80. this is given by the formula z = (x-u)/o, where x is the score, u is the mean, and o is the standard deviation. this gives

z = (80-78)/12 = 1/6 = .1667

now, find what percentile a z score of 1/6 correlates to in the normal distribution.

a z score of 1/6 = .1667 is equivalent to the 56.36th percentile of the distribution. so the probability a score is over this is 1-.5636 = .4364

the mean of a sample mean is equal to the original mean. however, the standard deviation of a sample mean is equal to the original standard deviation divided by the square root of n (sample size). so the new standard deviation is 12/sqrt(16) = 3.

the new z score is 80-78/3 = 2/3 = .667. this is equivalent to the 74.86th percentile. so the probability that the mean will be greater than this score is 1-.7486 = .2514.